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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Low-level communication with an IP telephone exchange
 Švehlík, Martin ; Krajsa, Ondřej (referee) ; Molnár, Karol (advisor)
This bachelor thesis deals with potentiality of low-level communication ways between the Silicon Laboratories Si3220 subscriber line circuit and Marvell PXA270 microprocessor with the Linux operating system installed on it. Following the materials published by the manufacturer, the means of communication between the Si3220 subscriber line circuit and PXA270 microprocessor were examined thoroughly. The dynamically attachable unit for the core of the Linux operating system was created to support read and write operations in the register and RAM address of the Si3220 circuit via the SPI serial interface. For the purpose of verification the test linking between the Si3220 circuit and PXA270 was created and selected registers of the Si3220 circuit were read.
Detailed record
Low-level communication with an IP telephone exchange
 Švehlík, Martin ; Krajsa, Ondřej (referee) ; Molnár, Karol (advisor)
This bachelor thesis deals with potentiality of low-level communication ways between the Silicon Laboratories Si3220 subscriber line circuit and Marvell PXA270 microprocessor with the Linux operating system installed on it. Following the materials published by the manufacturer, the means of communication between the Si3220 subscriber line circuit and PXA270 microprocessor were examined thoroughly. The dynamically attachable unit for the core of the Linux operating system was created to support read and write operations in the register and RAM address of the Si3220 circuit via the SPI serial interface. For the purpose of verification the test linking between the Si3220 circuit and PXA270 was created and selected registers of the Si3220 circuit were read.
Detailed record

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